Lubricating apparatus



1,632,986 June 21, 7- o. u. ZE

' LUBRICATING APPARATUS Original Filed Nov. 21, 1922 V Patented June 21, 1927.

-ments with inlet nipples,

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[c -m STATES PATENT crates.

OSCAR ULYSSES ZERK, OF CLEVELAND, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

\ THE BASSICK MANUFACTURING COMPANY.

Lunmcarmc arraanrus.

Original application filed November 21, 1922, Serial No. 602,465. Divided and this application filed.

January 3, 1924. Serial No. 684,169.

My invention relates to improvements in lubricating apparatus.

In the lubrication of moving elements, and especially in automobiles, it has become uniform practice to which a grease or oil gun is detachably secured. Generally, the gun is provided with a flexible outcoupling by hand, he

let tube having at its end a coupling'which is adjusted manually and locked-against the inlet nipple to "provide a tight joint therebetween. After the .user has locked the then grasps the gun barrel with one hand and with the other hand screws the plunger down, forcing the grease through the conduit.

These several operations each requirecondling the coupling, from which grease leaks during the pressure operation and especially after being removed, the users hands become greasy and dirty causing the gun and the coupling to slip when handled, and necessitating additional time in which to perform the attaching and detaching operations.

. The main object of my invention resides in overcoming theseobjections by so constructing a pistol and a nipple, that the pistol can be held in one hand and placed in direct osculatory, leakproof contact with the nipple, and while so held will inject lubricant into the nipple, when direct pressure is applied thereto.

Another object of my invention resides in providing a pistol with a metal connector which is so shaped that it forms a leakproof direct metal to metal contact with a nipple.-

. Another object of my invention is to construct the contacting faces of a nipple and, a connector, so that one provides a circular edge which fits against a convexly spherical a leakproof pressure maintained contact therebetween, which when pressed together in varying angular relations the circularedge encloses a passage in the convexly spherical surface.

Another object of my invention is to provide an improved lubricating system comto provide the ele-' are often performed from and further, in ban-- I g 1 n i O prising a gun with a lubricant reservo r and a nozzle, the said nozzle having a contact face with a centrally disposed exit opening togetherwith a lubricant receiving nipple with a face having an inlet opening positioned preferably centrally thereof, the one face having a peripheral circular edge and the other face having a convex spherically shaped surface, and means adapted to ejectl'ubricant under pressure from the said exit opening, the said nozzle contact face being adapted to be pressed against that of the nipple by the operator pressing the gun toward the nipple from any one of a number of difierent angular directions, the manual pressure so exerted being adapted to cause the ejection of lubricant from the nozzle into-the nipple and at the same time to provide suflicient pressure to maintain a tight lubricant proof contact between the circular edge of the one contact face with the spherical surface of the other contact of parts hereinafterdescribed and claimed,

reference being had to the accompanying drawings wherein Fig. 1 is a medialv vertical longitudinal sectional view of an embodiment of my invention.

Fig. 2 is a similar view of the nozzle end in contact with the, nipple and at an angle to the axis of the nipple.

Fig. 3 is a side elevational view of the valve between'the nozzle and the lubricant reservoir.

Fig. 4 is a medial vertical sectional view of a modified form of nipple and a fragmentary portion of a nozzle in contact therewith.

Fig. 5 is a side elevational view modified form'of nipple in Fig. 4:-

Fig. 6 is a medial vertical sectional view of another modified form of" nipple and a fragmentary end of a nozzle.

Fig. 7 is a side elevational view of the modified nipple shown in Fig. 6. I

Referring to the drawing, in which like of the characters represent like parts, the lubricant containing receptacle may be formed in vaopening 24:. The en rious well known ways. embodiment, however, the receptacle con- In my preferred a-restricted lubricant exit 12, to which a rigid cylindrical lubricant outlet nozzle 13 is rigidly secured by welding or other suitable means. The receptacle may be filled with lubricant when the cap 1].- is unscrewed from the openend of the barrel in theusual manner.

The rigid nozzle extends centrally and longitudinally from the outlet end of the barrel, and is provided with a central passage 14; extending therethrough which is in communication with the lubricant exit 12, of the barrel. The inner end of the passage is restricted by a circular shoulder 15, the inner wall of which curves inwardly, and upwardly, forming a smooth-junction with the curved inner wall of the lubricant exit 12, and providing a knife edge valve seat 16. The continuous curve thus formed within the receptacle, between the barrel and the valve seat, eliminates any corners or edges upon which lubricant can accumulate and permits the compressed lubricant to flush thevalve seat of dirt and grit, "insuring a leakproof closure. A valve member extends through the valve seat within the passage in the nozzle, and consists preferably, of a cylindrical and tapered head 17 which terminates in a stem 18. The stem is enlarged at its lower end and is threaded exteriorly. A longitudinally extending slot 19 is formed in the valve stem and its threaded end, and curves inwardly from the wall of the stem and substantially centrally through the threaded end thereof. The tapered portion of the head of the valve member extends into and forms a closure for the restricted portionofthe passage in the nozzle, when it is seated against the circular knife edge of the valve seat.

. A lubricant dispensing connector 21 haV- ing a passa e extending axially therethrough is mo imted to be reciprocated within the outer cylindrical end of the nozzle,

and forms the contacting portion of the nozzle which engages with the nipple 20 which is attached to a bearing element 22 in any suitable manner. The outer end of the connector projecting from the nozzle portion 13 extends inwardly providing a conical face 23 which is rovided with a central d of the connector which slides within the hollownozzle element--13 is threaded internally and receives the threaded head 19 of the valve stem forming an integral unit therewith. y A lubricant proofle'ather washer 26pmvided with a central aperture, through which the valve stem extends, is seated-- upon the to receive the short closure cap 11,:

inner end of the connector. 27 provided with a centralaperturethrough which the valve stem extends, rests upon the washer 26. A coil spring 28 is positioned between the shoulder 15 and the washer 27,,

nozzle to retain within the passage in the the lubricant proof washer in contact with the connector, and also, to normally keep the valve member seated upon the valve seat. When the valve'is open the lubricant passes from 'the barrel, through the valve seat, and into the passage in the'nozzle in A steel washer:

which the spring lies. The washer 26 is formed of a compressible material so that the compressed lubricant passing through the central aperture therein will expand the washer and provide a tight fit thereof, against the wall of the nozzle passage, to' prevent lubricant from working down between the outer wall of the connector and the nozzle. \Vhen the valve is open, the compressed lubricant fills the passage in which the spring lies, and passes into the space between the washers and the valve member, and then, into the slot 19 which overlies the nector.

The cap 11 is provided with an internally apertured threaded bearing nipple 29, which receives the threaded piston rod 30. The outer end 31, ofthe piston rod is bent at an obtuse angle, and knurled longitudinally to provide a handle for the pistol, and an apertu-red grip'is driven thereon. This angular handle provides a grip which can be firmly grasped in one hand, and further, will allow the user to exert a'maximum direct pressure against the pistol while so hel i The inner end of the piston rod terminates in a cylindrical shank upon which the apertured leak proof piston 34 is reciprocably secured. A washer 35 extends below the pis-' ton upon the shank 33, and a washer 36 extends above the piston upon the shank 33. At the upper end of the shank is rigidly secured a stop 37, which with the upset end 38 of the piston rod, secures the piston upon the shank, and allows a limited'sliding movement thereof.

Suitable resilient means are provided hepassage 23 through the con tween the stop 37 on the piston rod .and the reciprocable piston but in my preferred em bodiment, I use a stiff concavo convex, resilient sheet metal washer 39, which is apertured centrally to fit upon the shank. It will be understood that, while Ihave illustrated only one such washer, several superposed washers of this type could be used for the same purpose. Normally, the resilient washer retains the piston at the outer end of.

the shank, but the concavo convex metal washer will flatten out as the piston slides up upon the shank, during each-inward man ual operation of the piston rod, when the out-' let valve is closed. When the valve is opened its of the piston rod.

A lubricant through application of of the nipple, engaging sage 42 of the nipple seating the va will resume its northe compressed spring the piston to the end mal position and move In pressure operated guns lubricant is forced from a container under high pressure, and it is the present practice to mechanically secure the outlet of the gun to the nipple to prevent leakage, when placed in operative contact. It is also the practice to provide a gasket made of leather or similar material between the contacting portions of the gun and the nipple to prevent lubricant from leaking from the connection. In the several embodiments of my invention I illustrate a simple,.and eflicient solution, to the above practices and provide, generally, a nipple having a meal inlet contact face, and a metal connector forming a part of the nozzle having an outlet contact face which is pressed against the nipple face forming a leakproof contact.

The nipple 20 is provided with an inlet face 40 which is provided with a convex spherical contact surface 41. A passage 42 extends through the wall of the inlet face and preferably centrally of the convex spherical contact surface.

The passage 24 extending through the conical contact face of the nozzle connector is of a diameter such that the surrounding angular circular edge 43 of the connector will fit over a portion-of the spherical contact face the same to provide and enclosing the pastherein. The circular edge of the connector and the spherical surface of the nipple will allow the leakproof connection to be made therebetween when the nozzle" is held at various angles to the nipple, one angular position being shown in Fig. 2, and will permit the position of the gun to be changed with respect to the nipple after contact is made. -The gun can beheld in operative leakproof connection with the nip: ple in any relation theretoinwhich the passage 42 remains covered by the angular contact edge of the connector. a

Pressure of the gun against the nipple when the contact will move. the connector 21 inwardly unve 17, and the prepressure created against the lubricant by the spring pressed piston will automatically force the the nozzle as previously described and into the nipple from which it passes to the element to be lubricated. The lubricant can also be projected from \the connector when the contact faces are in engagement and the valve opened by screwing the piston inwardly. It will be seen, however, that it is generally more desirable to compress the spring 34 previously to the the gun to the nipple, so that leakproof a leakproof connection a charge will be injected and a contact made when the gun is pressed toward faces are in engagement tubular wall tapered the nipple after placing the contact faces in desired operative position.

The nipples shownin Figs. 1, 2, 4 and 5 are preferably formed of a single piece of sheet metal, while the nipple shown in Figs. 6 and 7 is cast. The convex spherical face of the nipple shown in Figs. 4 and 5 is formed at an angle to the longitudinal axis of the nipple and is designed for use especially in places which are hard to reach while holding the gun to exert pressure against the nipple. This angular contact face together with the construction of the two faces which permits a plurality of operative leakproof relations of the gun with the nipple is decidedly advantageous in lu- :bricating elements located in inaccessible places. The nipple shown in Fig. 6 is provided with a spring pressed valve 45 which normally closes the inlet passage 42, the pressure of the lubricant from the gun opening the valve when lubricating.

.This case is a division as to the subject matter-claimed herein, of an earlier application, Serial Number 602,465, filed November 21, 1922.

Having thus described number of embodiments, I am aware that numerous and extensive departures may be made from the embodiments herein illustrated, described and referred to, but without departing from the spirit of my invention.

I claim 1. The combination with a nipple element having an inlet opening convex spherical portion, of a gun for supnipple, said gun having a nozzle element terminating in'a convex conical outer surface, said nozzle element having a substantially cylindrical axial bore intersecting said conical surface to define a contact edge.

2. The combination with a nipple element, of a gun for supplying lubricant under pressure to said nipple element, said gun having a nozzle element, one of said elements having an opening surrounded by a convex sphericalportion, and the other of said elements terminating in a convex conical surface and having a substantially cylindrical axial bore intersecting said surface to define a contact edge.

3. Lubricant injection means comprising a gun having a nozzle, said nozzle having a in conically at the end to form an annular discharge orifice, and a receiving nipple having a convex spherical end of greater diameter than said orifice, whereby said nozzle can form a tight seal and deliver to said nipple when pressed against the same in any one of a plurality of diflerent angular relationships.

4. Lubricant injection means comprising a my invention in a I surrounded by a K tubular well tapered in (sonically at the end form an annular discharge orifice, and a receiving nipple having a, convex spherical end of greater diameter than said orifice, whereby said nozzle can form a, tight seal and deliver to said nipple when pressed against the same in any one of a pluralityof neeaeee f difierent angular relationships, said nip le being in the formof a tube with one'slde bulged" out near the end to receive said nozzle at a, lateral angle. 1 In testimo y whereof, I hereunto afix my signature this 29th day of December 1923.

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